RENNtech ECU Upgrade for E 350 | W211 | 290 HP / 278 LB-FT | MY2006-2009 porsche-macan---my2019---gts-esr8103631 Available with low- or high-profile

Available with low- or high-profile stanchions

+120 HP / +135 TQ

ECU+ Upgrade | Up to 745HP / 767 LB-FT | Gains: +97 HP & +54 LB-FT

CLASS C (W 203) 55 AMG [Needs 2 Filters] (HP: 367 | Year: 04 > 07)

0L V8 BiTurbo) Stock Performance (at crank):

RENNtech ECU Upgrade for E 350 | W211 | 290 HP / 278 LB-FT | MY2006-2009 porsche-macan---my2019---gts-esr8103631 Available with low- or high-profileRENNtech ECU Upgrade for 211 E 350. up to 290HP and 278 LB FT Gains: +22HP & 20LB FT RENNtech has been at the forefront of ECU tuning since electronic engine management started to show up in vehicles during the mid 1980's! Our experience, countless hours of in house research, development and exhaustive testing ensure that our proprietary ECU upgrade offers incredible performance gains and rock solid daily driver reliability. RENNtech tuning software